Moving-picture machine.



J. GRIFPITHS.

MOVING PICTURE MACHINE. APPLIGATI'K rILBDxAg. 12, 191s.

2 @REITS-SHEET 1.

rammed June 9, 1914. l'

IIN/5555s'- /NI/ENTo/e J. GRIFPIHIS.y l MOVING PICTURE MACHINE.'

' APPLICATION IIVLED MA. 1.2.1913.

Patented June 9. 191:4..

` z'sHEETs-'SHBBT 2.

,ting oil' the light rays from gage the contact sleeve 'UNITED s'TATnsPATENT ernten.

JOHN GRIrrITHs, or

Movmeicrnnn MACHINE.'

Specification of Letters Eatent.

T0 all whom it may concern Y Be it known tiat I, JOHN' Gnirrrrns, a,citizen or the United States, residingat Ansonia, New Haven county,Connecticut, have invented certain new and useful lm` provements inMovingPicture Machines; and I do declare the clear, and exact desorptionof the invention, such as will enable others skilled in the. art towhich it appertains to make and use thoe This invention relates tocertain new and useful improvements inmoving picture machines andrelates more particularly to novel and improved means for automaticallcutL ythe tilm, s ould the latter stop or be fed at speed belovT normal.4

Further, the invention aims to provide novel and improved means forbraking the receiving reel should the film be subjected to an abnormalstrain or pull such as might injure the same.

In the draivings: Figure 1 is a side elevation of amoping picturemachine, showing the present invention applied thereto; Fig. 2 is a topplan view of the shutter controlling mechanism; Fig. 8 is an endelevation of the braking mechanism; Fig. t is an enlarged view, partlyin section of the drum that forms a part of the braking and shuttercontrolling mechanism; and Fig. 'is a` per-y spective view of thecontact member of the shutter controlling mechanism.

rlhe .film is fed in-the usual manner 'from the reel 1 to the receivingreel 2 `and passes between the are lamp 8 and the lens ll. The lm in itsstated passage engagesnover a drum 5 which is rotatably mounted o n aspindle 6 that is secured to the upper end of an arm 7 which latter ispivoted at its lower end atjS'. The lower end of the arm 7 is .connectedby a coil spring 9 to an adjustablerod 10 in order to regulate thetension of the spring. Drum 5 carries on its interior, a plurality offlexible spring lingers 11 which are formed with contact heads 12, thecontact heads being disposed so as to en- 13 Which is insulated` fromlthe bearing 14 of 'the drum and the arm 7 by insulation 15.- Thecontact sleevev `1.3 is integral Witha plate 16 that is at-l tached tothe arm 7 tact therewith; the arm and has a wire 17 in con 7 has a brakeblock following to be a full,

or facing 18 affixed thereto for engagement With the periphery of thereel 2 for a purpose to be later set forth.` The axle of the reel 2 hasa disk 19 rigidly mounted thereon, one face of which has a'leather facevthat'engages a leather faced disk 2O that is slidably mounted on theaxle, the disk 20 being urged into contact with the disk 19 by means ofa spring that surrounds the axle of the reel .2, the disk 2O beingdriven by a sprocket 22 in the usual manner.

` A. shutter 23 :is mounted on the free end of a member that consists ofa body portion 24 having arms 25 which are pivoted to a stub shaft 2G,the arms being engaged with the ends of a coil spring 27 which isarranged to throw the shutter from the full lineposition oflig. 1 to thedotted'line position shown in said figurel the space between the arms 25and, When energized, attracts a latch 29 which is pivoted at 30 and hasa Weight 31 formed on its loWer right angular end, the function of whichWeight is to hold the catch in the position shown in Fig. 1, de. out ofcontact with the magnet. The catch proper engages over the innerend ofthe body 24: and thereby holds said body and-.the shutter 23 in loweredposition to permit unobstructed passage of the light from the are lamp 8throughthe `film to theflens 4. On the under face of the body 24 isattached a U-shaped contact member 32,the free ends 33 of the legs ofwhich are adapted to engage contact posts or terminalsv 34 whichunderlie the arms 25. `The magnetV 28 is -connectedvby a Wire 85 to theWire 17 and by a Wire 36to a motor and battery circuit 40. A yWire 37contacting with arm 7 is ta ped onto a Wire 38, which is included in themotor circuit 39,

` said wire 38 being connected to .one of the contact posts 34. A `Wire4:1 leads from the battery to the'other contact post 34. l

Should the iilm, for any reason, be subjeeted to excessive strain orpull, it will, by

reason of its engagement with the drum 5, pull the arm 7 toward thereceiving reel 2, thus applying the braking lface to the reel, with theresult that the reel 2 is held .sta-

tionary and the driving disk 2O Willvhave a,

slipping contact with the disk 19. When the strain or pull ceases, thetension on the drum being released, the latter is returned t-O nor-Patented .T une 9, 1914@v iinsoma, connncrroun'nssienon or ons-HALF ToAmon r. HAYWARD, or Berner., comunicazione.

A magnet 28 is mounted in mal position, bythe spring 9, which lcauses lthebrake 18 to release the "eel 2 an'eilovvs the delving Clisi; 20 toagain ifevolve me clisl.

.19 and tlie'fevvih the reel 2 at' normal speed.

During the opeiaiion oi' the ilm at non mal speed, the heads l2 of thengeis 1l, will, due to oentriiugai action, be lielii ou?l of engagementwith the contact sleeve 13 with the ijesult that the magnet eiifcnit isheld open.' Shoulci the lm stop or slow up, the heads 12 will eonaci;with sleeve i3 tliei'eby closing the magnet ciicuit, enel energizing themagnet; tie energizing of lie magnet attracting the catch 2Q, an movingsame oui; o engagement with the membe 2&7 releases lie latter andpermits same io respond to the action of the spring 2?, which moves. eheshuttei up intorthe (iottecl line position shown in Fig. l, therebycutting o' the light rays. When the'membei' 24 moves up to bring; Jcheshutter into operative posiltion, it will be seen that the Contactmember 32 in moving: With member 24 will have ifs ends 33 moved Qu/61Eeontact with the tei1a ininals 34; breaking the magnet circuit, so thatto again position 'the parts to enable operation of the machine, it isonly necessary, to .restore the paires to the full line position oi Fig.i, and "no heid lie catch in engagement with the memloei` 24 until themachine is speeding sufficiently to cause the heads l2 of iingers il toloe ont of contact with the sleeve 13. when the member 24 moves up-Waidiy it also carries the Contact member 32 with it, causing the ends33 oit' the latter to move out of contact with 'the terminals 34@ehils-bealing motor eiicuit and ef'eeiing stoppage of the machine.

lWhat is claimed is:

ln combinaion with the .light projector and the lm reeeiving foil of emoving picuie noaehine. means actuated by the film to Jafi-alie saidi'oli when 'the lm is subjececl to 'abnoimal pull or strain, devices toout ofi the light and stop the motor, and mechanism also operated bysaifl means to move said devices '30 opeabive position when the filmbreaks or moves at spee'cl less than' normal. ln tesimony Wheieo l affixmy signature in preseneep two Witnesses.

JOHN GRlFFTHS.

l/'Vitnessesz

